Spring-secured safety valve



Patented June 1, 926

'nueimn eensramn, or 330111;, saw 2031. I

SPRING-SECURED VALVE.

Application med December 17, 1825. Serial No. 75,800.

This invention relates to improvement in gas fixtures and has referenceto the improvement of gas cocks or valves to prevent accidental openingof gas service lines, particularly thcserelated to gas stoves, ranges,

heaters and the like.

The object being to provide a construction both simple and inexpensiveto pre clude the liability of children or the inexperiencedinadvertently opening a gas supply control, such as a cock or valve.

A principal feature of my invention is the provision of means normallyacting to prevent turning movement of the valve stem, which can bemanipulated to open the gas supply only when considerable manualdownward pressure is exerted on the operating handle after which the gassupply passage may be made free by a quarter turn of said handle; a

' A further feature resides in the two part construction of the valveproper, which comprises a valve sleeve tapered to coincide with itscasing and revoluble therein and a stem slidable in said sleeve andrevoluble with said sleeve in the casing.

Further objects and features incident in the particular construction ofthe parts of the structure will be hereinafter apparent in thespecification taken in connection with the accompanying" drawing, inwhich I have illustrated 'a preferred embodiment, in which drawing aFig. 1 is a central of the device'closed.

Fig. 2 is a partial sectional elevation showing the ports open. v

- Fig. 3 is a cross section on the 111163-3 of Fig.1, and f Fig. 4 is across section on the line 1 4 of Fig. 1.

Referring tothe drawings, 10 ind cates a valve casing and 11 and 12. itsintake and outlet service pipes. The interior of the casing has theusual taper and is adapted to receive a correspondingly tapered valvesleeve 13.liaving a central bore 14, in which a valve stem 15 operatesthrough the use 'of handle 16. A stop pin 17 is provided on the sectionwith the ports sleeve 13'an'd is adapted to engage a shoulder 18 on the;valve' casing to limit the swing of the handle. Stem 15 further isprovided with oppositely extending pin 19, operating in grooves 20, andlockin pin 21,-normally engaging slots 22 in the ottoin of the easing,said casing, at the bottom, being closed by a threaded cap 23, toprevent leakage.

' The stem is also formed with a port 24,

normally ranging at a right angle to thevservice pipes 11 and 12, andthe sleeve 13 also has a port 25', likewise normally closed and invertical alignment with the port 24,

but not in normal horizontal alignment therewith.

The valve stem 15, is urged upwardly by a heavy spring 25, causing thepin 21 to bottom in the casing slots 22, thus locking the valve partsagainst rotation under 1101" mal conditions.

When, however, the handle 16 is de ressed against the action of spring25, w 'ch is heavy enough to'thwart a childs efforts to a force theparts, downwardly, the stem 15 is likewise depressed until the ports 24and 25 register and the pin- 21 is free of'the slots 22 in the casing,when the valve parts 13 and 15 may be turned to .cause'the saidregistering parts' to align ,with the service pipes 11' and 12 andcomplete the service line. aswill be understood.

The same construction may-be applied to the upper burner cocks or valvesof a ran or Steve by changing the parts as will apparent to thoseskilled in the art.

Various changes. in the form, proportions, and minor details of myinvention ma be resorted to at will without de arting f rom the spiritand scope thereof; l lenoe I ,con-

sider myself entitled to all suchvariations as may lie within the termsof my claims.

What I claim as new, is

1. A safety cock for gas in combination, with the usual valve'casinghaving a tapered interior and radial slots at the bottom thereof, avalve shell having a portnormally ranging, at a right angle to theservice pipes and oppositegrooves, opening at the top thereof, a valvestemhaving. a handle, pins-operating in said grooves, a port normally-invertical alignment'with the port of the shell and above the same,

and pins near the bottom thereof to engage the slots in said casing tonormally lock the ;valve parts against rotation, means for" 10B urgingthe stem into the above named position to close the gas supply and meansfor lines comprising,

' normally locking depressing said stem to unlock said stem so that saidstem and valve shell may be re volved for o ening said supply.

2. In a sa ety cock for gas lines, in combination with a casing, a twoart valve therein, one part being reVoIubl e therein, the other partbeing slidable and revoluble within the first, both parts having portsvertically aligned but normally non-registering, slidin locking meansbetween the valve parts, s dable locking means between the parts and thecasing whereby when the inner part is depressed, the said ports arecaused to register and the parts unlocked from the casing to permit thevalve structure to be turned, so that the said ports are aligned withthe service pipes to open the gas line. i

3. A gas control device comprising a casing, a two part valve therein,consisting of a valve shell and a stem slidable therein and bothrevoluble within said casing, means for rotation, said va ve beingadaptedto be unthe valve parts against locked by depressin one of saidparts to revoluble within said casing, means for normally locking thevalve to the casing, and means for unlocking said valve to permit theturning thereof by depressing one of said parts, to open the serviceline.

5. A gas control device comprising a casing, a multiple part valveconsistin of a valve shell and a stem slidable therem and both revolublewithin said casing, normally locked against rotation and means, when onepart of said valve is depressed, for unlocking said valve to permit ofits turning to open the service line.

Signed at New York city in the county of New York and State of New York,December, A. D. 1925.

EUGENE GANSFLRIIVED."

